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<?php
/**
* @author Roeland Jago Douma <rullzer@owncloud.com>
*
* @copyright Copyright (c) 2016, ownCloud, Inc.
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OC\Repair;
use OCP\Files\IRootFolder;
use OCP\IDBConnection;
use OCP\IUser;
use OCP\IUserManager;
use OCP\Migration\IOutput;
use OCP\Migration\IRepairStep;
/**
* Class RemoveRootShares
*
* @package OC\Repair
*/
class RemoveRootShares implements IRepairStep {
/** @var IDBConnection */
protected $connection;
/** @var IUserManager */
protected $userManager;
/** @var IRootFolder */
protected $rootFolder;
/**
* RemoveRootShares constructor.
*
* @param IDBConnection $connection
* @param IUserManager $userManager
* @param IRootFolder $rootFolder
*/
public function __construct(IDBConnection $connection,
IUserManager $userManager,
IRootFolder $rootFolder) {
$this->connection = $connection;
$this->userManager = $userManager;
$this->rootFolder = $rootFolder;
}
/**
* @return string
*/
public function getName() {
return 'Remove shares of a users root folder';
}
/**
* @param IOutput $output
*/
public function run(IOutput $output) {
if ($this->rootSharesExist()) {
$this->removeRootShares($output);
}
}
/**
* @param IOutput $output
*/
private function removeRootShares(IOutput $output) {
$function = function(IUser $user) use ($output) {
$userFolder = $this->rootFolder->getUserFolder($user->getUID());
$fileId = $userFolder->getId();
$qb = $this->connection->getQueryBuilder();
$qb->delete('share')
->where($qb->expr()->eq('file_source', $qb->createNamedParameter($fileId)))
->andWhere($qb->expr()->orX(
$qb->expr()->eq('item_type', $qb->expr()->literal('file')),
$qb->expr()->eq('item_type', $qb->expr()->literal('folder'))
));
$qb->execute();
$output->advance();
};
$userCount = $this->countUsers();
$output->startProgress($userCount);
$this->userManager->callForAllUsers($function);
$output->finishProgress();
}
/**
* Count all the users
*
* @return int
*/
private function countUsers() {
$allCount = $this->userManager->countUsers();
$totalCount = 0;
foreach ($allCount as $backend => $count) {
$totalCount += $count;
}
return $totalCount;
}
/**
* Verify if this repair steps is required
* It *should* not be necessary in most cases and it can be very
* costly.
*
* @return bool
*/
private function rootSharesExist() {
$qb = $this->connection->getQueryBuilder();
$qb2 = $this->connection->getQueryBuilder();
$qb->select('fileid')
->from('filecache')
->where($qb->expr()->eq('path', $qb->expr()->literal('files')));
$qb2->select('id')
->from('share')
->where($qb2->expr()->in('file_source', $qb2->createFunction($qb->getSQL())))
->andWhere($qb2->expr()->orX(
$qb2->expr()->eq('item_type', $qb->expr()->literal('file')),
$qb2->expr()->eq('item_type', $qb->expr()->literal('folder'))
))
->setMaxResults(1);
$cursor = $qb2->execute();
$data = $cursor->fetch();
$cursor->closeCursor();
if ($data === false) {
return false;
}
return true;
}
}
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